Brake Disc

Before this inspection, brake pads must be removed.

Check disc surface for scratches in wearing parts. Scratches on disc surface noticed at the time of specified inspection or replacement are normal and disc is not defective unless they are serious.

But when there are deep scratches or scratches all over disc surface, replace it. When only one side is scratched, polish and correct that side.

Front brake disc thickness "a" 

Standard: 25 mm (0.984 in.) 

Limit: 23 mm (0.905 in.) 

Fig 1: Measuring Front Brake Disc Thickness

Courtesy of SUZUKI OF AMERICA CORP.

Use wheel nuts (1) and suitable plain washers (2) to hold the disc securely against the hub, then mount a dial gauge (3) as shown in figure and measure the runout at 25 mm (0.98 in.) from the outer edge of the disc.

Front brake disc deflection 

Limit: 0.1 mm (0.004 in.) 

Fig 2: Measuring Runout Of Front Brake Disc

Courtesy of SUZUKI OF AMERICA CORP.